Company email (July 2015):
"We do use isinglass if our beers go out fined. However we do supply un-fined beers on request.
We do not use any other animal products and we do not sub- license."

Note from Vilma (May 2015):
"I just thought I’d let you know the information on Great Heck brewery is slightly out of date, they do more bottled beers now and some are even vegan friendly. Well, only Amish Mash it would appear… source http://www.greatheckbrewery.co.uk/bottles.html"

Company email:
"All our beers are sold in cask only. Most of them contain isinglass finings and are therefore unsuitable for vegans. Treason Stout (House beer at The Guy Fawkes Hotel, Hopfweizen and Hefeweizen (Occasional german style wheat beers) are all unfined and therefore suitable for vegans. As long as you don’t mind eating yeast."